CVE-2021-29987

After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. *This bug only affects Firefox on Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91 and Thunderbird < 91.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2021-33/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-36/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1716129	Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/202202-03	Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Information

Published : 2021-08-17 13:15

Updated : 2022-03-16 08:13

NVD link : CVE-2021-29987

Mitre link : CVE-2021-29987

JSON object : View

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

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Products Affected

mozilla

firefox
thunderbird

linux

linux_kernel

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